BUCK控制芯片实例
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The TPS4005x uses voltage feed-forward control techniques to provide good line regulation over the wide (4:1) input voltage range, and fast response to input line transients with near constant gain with input variation which eases loop compensation. The externally programmable current limit provides pulse-by-pulse current limit, as well as hiccup mode operation utilizing an internal fault counter for longer duration overloads.
260
(3) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
UNIT
VIN
45
Input voltage range, VI
VFB, KFF, SS, SYNC SW SW, transient < 50 ns
--0.3 to 6
--0.3 to 45
V
--2.5
Output voltage range, VO
COMP, KFF, RT, SS
--0.3 to 6
(2) See Application Information section, pg. 7
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(3)
TPS40054 TPS40055 TPS40057
TPS4005xPWP
1 KFF
ILIM 16
2 RT
VIN 15
VIN
3 BP5 BOOST 14
4 SYNC HDRV 13
5 SGND
SW 12
6 SS/SD BP10 11
7 VFB
LDRV 10
Байду номын сангаас8 COMP PGND 9
+ VOUT
--
UDG--03179
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
FEATURES
D Operating Input Voltage 8 V to 40 V D Input Voltage Feed-Forward Compensation D < 1 % Internal 0.7-V Reference D Programmable Fixed-Frequency Up to 1 MHz
www.ti.com
SHEET 1 TO 2
Copyright ¤ 2003, Texas Instruments Incorporated 1
TPS40054 TPS40055 TPS40057
SLUS593 -- DECEMBER 2003
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
Drawn
Designed Checked Checked Checked
Approved
00
ISSUE THE SPEC.
05/16/2003
01
CHANGE SUPPLIER P/N FROM TPS40053 TO TPS40057PWPR
06/16/2003
05/16/2003 06/16/2003
APPLICATIONS
D Power Modules D Networking/Telecom D Industrial D Servers
SIMPLIFIED APPLICATION DIAGRAM
DESCRIPTION
The TPS4005x is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS4005x family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed- forward, high-side current limit, and loop compensation.
TPS40055PWP
SOURCE/SINK(2) with prebias
Plastic HTSSOP (PWP)(2)
TPS40057PWP
(1) The PWP package is also available taped and reeled. Add an R suffix to the device type (i.e., TPS40054PWPR). See the application section of the data sheet for PowerPAD drawing and layout information.
Output current, IOUT
RT
200
PA
Operating junction temperature range, TJ
--40 to 125
Storage temperature, Tstg
--55 to 150
qC
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
The TPS4005x are also synchronizable to an external supply. They incorporate MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction.
RECOMMENDED OPERATING CONDITIONS
Input voltage, VI Operating free-air temperature, TA
PWP PACKAGE(4)(5) (TOP VIEW)
MIN NOM MAX UNIT
8
40 V
--40
85 qC
KFF RT
BP5 SYNC SGND SS/SD
IC
TI
THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF DELTA ELECTRONICS , DRAWING NO. :
REV.
INC. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SELL OF APPARATUSES OR DEVICES WITHOUT PERMISSION.
Voltage Mode Controller
D Internal Gate Drive Outputs for High-Side and
Synchronous N-Channel MOSFETs
D 16-Pin PowerPADt Package (TJC = 2qC/W) D Thermal Shutdown D Externally Synchronizable D Programmable High-Side Current Limit D Programmable Closed-Loop Soft-Start D TPS40054 Source Only D TPS40055 Source/Sink D TPS40057 Source/Sink With VOUT Prebias
2510400314
01 SHEET
A
TO
1
Frame Name : FR1R00.XLS
8
WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER
TPS40054 TPS40055 TPS40057
SLUS593 -- DECEMBER 2003
DELTA DOC CENTER
05/16/2003 05/16/2003 06/16/2003 06/16/2003
Doccenter-chungli 2004.01.28 11:58:26 +08'00' Document is released
台達電子工業股份有限公司
DESCRIPTION :
SUPPLIER :
DELTA ELECTRONICS, INC.
DELTA DOC CENTER
ITEM DELTA P/N
1
2510400314
SUPPLIER P/N TPS40057PWPR
NOTES *1
NOTES : *1 IC SYN BUCK CONTROLLER TSSOP-16P
REV.
Description
Date
The other specification must meet Delta's doc.NO: 10000-0071.
DELTA DOC CENTER
ORDERING INFORMATION
TA
APPLICATION
PACKAGE
PART NUMBER
SOURCE(2)
Plastic HTSSOP (PWP)(2)
TPS40054PWP
--40qC to 85qC
SOURCE/SINK(2)
Plastic HTSSOP (PWP)(2)
VFB COMP
1
16
2
15
3
14
4 THERMAL 13
5
PAD
12
6
11
7
10
8
9
ILIM VIN BOOST HDRV SW BP10 LDRV PGND
(4) For more information on the PWP package, refer to TI Technical Brief, Literature No. SLMA002. (5) PowerPADt heat slug must be connected to SGND (pin 5) or electrically isolated from all other pins.
260
(3) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
UNIT
VIN
45
Input voltage range, VI
VFB, KFF, SS, SYNC SW SW, transient < 50 ns
--0.3 to 6
--0.3 to 45
V
--2.5
Output voltage range, VO
COMP, KFF, RT, SS
--0.3 to 6
(2) See Application Information section, pg. 7
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted(3)
TPS40054 TPS40055 TPS40057
TPS4005xPWP
1 KFF
ILIM 16
2 RT
VIN 15
VIN
3 BP5 BOOST 14
4 SYNC HDRV 13
5 SGND
SW 12
6 SS/SD BP10 11
7 VFB
LDRV 10
Байду номын сангаас8 COMP PGND 9
+ VOUT
--
UDG--03179
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
FEATURES
D Operating Input Voltage 8 V to 40 V D Input Voltage Feed-Forward Compensation D < 1 % Internal 0.7-V Reference D Programmable Fixed-Frequency Up to 1 MHz
www.ti.com
SHEET 1 TO 2
Copyright ¤ 2003, Texas Instruments Incorporated 1
TPS40054 TPS40055 TPS40057
SLUS593 -- DECEMBER 2003
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
Drawn
Designed Checked Checked Checked
Approved
00
ISSUE THE SPEC.
05/16/2003
01
CHANGE SUPPLIER P/N FROM TPS40053 TO TPS40057PWPR
06/16/2003
05/16/2003 06/16/2003
APPLICATIONS
D Power Modules D Networking/Telecom D Industrial D Servers
SIMPLIFIED APPLICATION DIAGRAM
DESCRIPTION
The TPS4005x is a family of high-voltage, wide input (8 V to 40 V), synchronous, step-down converters. The TPS4005x family offers design flexibility with a variety of user programmable functions, including soft-start, UVLO, operating frequency, voltage feed- forward, high-side current limit, and loop compensation.
TPS40055PWP
SOURCE/SINK(2) with prebias
Plastic HTSSOP (PWP)(2)
TPS40057PWP
(1) The PWP package is also available taped and reeled. Add an R suffix to the device type (i.e., TPS40054PWPR). See the application section of the data sheet for PowerPAD drawing and layout information.
Output current, IOUT
RT
200
PA
Operating junction temperature range, TJ
--40 to 125
Storage temperature, Tstg
--55 to 150
qC
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
The TPS4005x are also synchronizable to an external supply. They incorporate MOSFET gate drivers for external N-channel high-side and synchronous rectifier (SR) MOSFETs. Gate drive logic incorporates anti-cross conduction circuitry to prevent simultaneous high-side and synchronous rectifier conduction.
RECOMMENDED OPERATING CONDITIONS
Input voltage, VI Operating free-air temperature, TA
PWP PACKAGE(4)(5) (TOP VIEW)
MIN NOM MAX UNIT
8
40 V
--40
85 qC
KFF RT
BP5 SYNC SGND SS/SD
IC
TI
THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF DELTA ELECTRONICS , DRAWING NO. :
REV.
INC. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SELL OF APPARATUSES OR DEVICES WITHOUT PERMISSION.
Voltage Mode Controller
D Internal Gate Drive Outputs for High-Side and
Synchronous N-Channel MOSFETs
D 16-Pin PowerPADt Package (TJC = 2qC/W) D Thermal Shutdown D Externally Synchronizable D Programmable High-Side Current Limit D Programmable Closed-Loop Soft-Start D TPS40054 Source Only D TPS40055 Source/Sink D TPS40057 Source/Sink With VOUT Prebias
2510400314
01 SHEET
A
TO
1
Frame Name : FR1R00.XLS
8
WIDE-INPUT SYNCHRONOUS BUCK CONTROLLER
TPS40054 TPS40055 TPS40057
SLUS593 -- DECEMBER 2003
DELTA DOC CENTER
05/16/2003 05/16/2003 06/16/2003 06/16/2003
Doccenter-chungli 2004.01.28 11:58:26 +08'00' Document is released
台達電子工業股份有限公司
DESCRIPTION :
SUPPLIER :
DELTA ELECTRONICS, INC.
DELTA DOC CENTER
ITEM DELTA P/N
1
2510400314
SUPPLIER P/N TPS40057PWPR
NOTES *1
NOTES : *1 IC SYN BUCK CONTROLLER TSSOP-16P
REV.
Description
Date
The other specification must meet Delta's doc.NO: 10000-0071.
DELTA DOC CENTER
ORDERING INFORMATION
TA
APPLICATION
PACKAGE
PART NUMBER
SOURCE(2)
Plastic HTSSOP (PWP)(2)
TPS40054PWP
--40qC to 85qC
SOURCE/SINK(2)
Plastic HTSSOP (PWP)(2)
VFB COMP
1
16
2
15
3
14
4 THERMAL 13
5
PAD
12
6
11
7
10
8
9
ILIM VIN BOOST HDRV SW BP10 LDRV PGND
(4) For more information on the PWP package, refer to TI Technical Brief, Literature No. SLMA002. (5) PowerPADt heat slug must be connected to SGND (pin 5) or electrically isolated from all other pins.